Upgrading Door Locks

The '66-up lock cylinders are a little longer, so the offset dogleg in the lever isn't needed. Me, I remove the C-clip holding the lever onto the RH door cylinder and reposition the lever so it's just like the LH door cylinder; it is a minor but persistent annoyance to me that you turn the key counterclockwise to unlock and clockwise to lock on the left, but the other way round on the right. I like counterclockwise-unlock, clockwise-lock on both sides. But that's strictly optional.